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A tiler counts squares of side 1 to 12 and adds their areas. What is the total?
A600
B650
C625
D676
Answer & Solution
Correct answer: B. 650
Squares sum to n(n + 1)(2n + 1)/6, which for n = 12 is 12 x 13 x 25 / 6 = 650.
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